Warm-air furnace



BATENTED JAN. 5, 1904.

0. L. BADGER.

WARM AIR. FURNACE.

APPLIOgTION FILED MAY 11,1903.

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PATENTED JAN. 5, 1904.

. 0. L. BADGER.

WARM AIR FURNACE.

' APPLIUATION FILED MAY 11, 1903.

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Patented January 5, 1904:.

PATENT OFFICE.

OLIVER L. BADGER, OF WHEELING, WEST VIRGINIA.

-' WARM-A'IRJFURNACE.

SPECIFICATION formingpart of Letters Patent No. 748,834, dated January 5, 1904.

Application filed May 11, 1903. derial No. 156,533. (No model-) To all whom it may concern.-

. Be it known that I, OLIVER L. BADGER, a residentof Wheeling, in the county of Ohio and State of Test Virginia, have invented a new and useful Improvement in Warm-Air Furnaces; and I do hereby declare the follow ing to be a full, clear, and exact description thereof.

My invention relates to warm-air furnaces, and especially to what are known as roundpot furnaces.

The object of my invention is to provide a cheap and simple form of such furnace, whereby great heat radiation will be obtained therefrom to be supplied to the different rooms orapartmeuts of a buildingin which it is used, as well as such a furnace in which secondary combustion is obtained therein.

My invention consists, generally stated, in the novel construction, arrangement, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use 1 myimproved warm-air furnace,I will describe the same more fully, referring to the accompanying drawings, in which Figure 1 is a vertical central section of warm-air furnace embodying my invention shown within a metal casing and taken through the fuel and ash-pan doors thereof. Fig. 2 is a front View of the furnace, showing the same inclosed in a brick casing and such casing being shown in section. Fig. 3 is a vertical central section of the furnace and which is. the fire-pot 1, having the grate-bars 2 at. thelower end of the same and below which is the ash-pan 3. The fire-pot 1 is of circular form and extends outwardly at an angle and upwardly from the grate-bars 2, being formed of the outer shell 4 and inner shell 5, and between suchshells 4 5 is the space 6, which is open at its upper and lower ends 7 and 8, respectively. Above the firepot 1 and upper-end 7 is the draft-damper 9, which is operated in any suitable manner, as by a rod 9, connected thereto from the exterior of the furnace, and such damper acts to and 18, respectively, of said dome 12, such inner shell 17 acting with the outer shell 1 of the fire-pot 1 to form the circular space 19. Hot-air ports 19 extend through the dome 12 by connecting the curved portion 15 of the inner shell l7'thereof with the outer shell 18 thereof, so as to communicate-with said space 19. The diaphragm 11 is curved downwardly, as at 11", from the damper 9 and extends down in a vertical line within the interior 12 and between the shells 17 and 18 of the domes 12, as at 11", and acts to form the passage-way 20 between the lower end of said vertical portion 11" and the rounded end 16 on said dome l2.

Extending out from the fire-pot l is the fuel-chute 21, which is connected to the furnace-front 22 and is provided with the fueldoor 23 thereon, while the ash-pan 3 is also connected to the furnace-front 22 and is provided with the ash-pan door 24 thereon. A cold-air chute 25 is connected to the'furnacefront 22 and space 6 and are provided with the dampers 25 thereon, and such front 22, is adapted to have the casing 26 secured thereto, which casing surrounds the furnace A and is supported upon the base or pillars 27. The casing 26 can be provided with the cold-air entrance-port 28 and has the smoke-pipe 14, passing out through the same, while hot-air pipes 29 communicate with the chamber 26 of said casing 26 and pass through said casing to the different rooms or apartments.

The use and operation of my improved warm-air furnace is as follows: The fuel is fed into the fire-box 1 of the furnace A through the fuel-chute 21 onto the grate-bars 2, and fire being applied to such fuel in said firebox will enable the products of combustion to pass therefrom up through said fire-box 1 and strike against the draft-damper plate 9 in the dome 12,which will deflect the same toward the diaphragm 11 in said dome, and the curved portion 11 on said diaphragm 11 will direct said products down through the fiue 10. As the products of combustion are thus directed down through the due in the interior 12 of the dome 12, formed by the diaphragm 11, they will pass through the passage-way under the end of said dia phragm, after which they will pass up through the fine 10 on the opposite side of said diaphragm in said interior into the smoke-pipe 14, and thence to the chimney or stack. The waste heat and products of combustion generated by the fuel in the fire-box 1 in thus passing through said fire-box and dome 12 to the chimney or stack will strike against the .inner shell 5 of the fire-pot 1, damper 9, diaphragm 11, and dome 12 will heat these parts,

so that the heat therefrom 'will be radiatedthrough them and so cause hot air to be generated thereby which will accumulate in the chamber 26, formed by the casing 26 around the furnace A, which hot air can he carried ofi therefrom by the pipes 29 to the different rooms or apartments in the building to be heated. WVhen the furnace A is thus in use, cold airis supplied to the chamber 26 through the port 28, which cold air will be drawn through such port and pass up through the space 19, through the port 19 and around the furnace A, thereby striking the heated walls of said furnace and forming, with the heated air radiated from the furnace, the accumulated hot air in said chamber 26 for the rooms and apartments, as before described. Cold air is also introduced into the space 6 between the outer and inner shells 4 and 5 of the fire-pot 1 and at the lower end 8 thereof through the door 24 of the ash-pan 3, which air will be superheated in passing up through the space 6 and will pass out of said space at the upper end 7 thereof, so as to create secondary combustion at this point under thecurved portion 11' of the diaphragm 1.1, where such superheated air joins the products of combustion in passing from the fire-pot 1 down through the flue 10, as before described. desired, cold air may also be introduced into said space 6 by means of the air-chute 25 through the dampers 25, as shown in Fig. 1, or through an air-port 25 in the outer shell f said fire-pot 1, (also shown in Fig. 1,) and when so desired the draft-damper 9 can be opened, so as to permit the products of 1 combustion to pass directly from the fire-pot 1 out through the smoke-pipe 14 to the chimney or stack instead of by way of the flues 1O 10.

It will be evident that a radiating-drum 27' can be placed upon the dome 12, such as is shown in Figs. 5 and 6, which drum is connected by the central chamber 28 with the smoke-collar 13 on the dome 12, and such central chamber is connected to an outer chamber 29, having a divisional wall 30 therein, so that the products of combustion will pass through the collar 13 into the central chamber 28 and be compelled by the divisional Wall 30 to pass through the outer chamber 29 entirely around the drum 27 to the smoke-outlet 31 therein into the smoke-pipe, and thence to the chimney or stack. In this use of the radiating-drum 27 the fresh air andhot air radiated from the furnace A passes up through the space 32 between the chamhers 29 and 30 of said drum 27 into the chamber 26 and out through the pipes 29 to the rooms or apartments to be heated.

Various other modifications, additions, and changes in the design and construction of my improved warm-air furnace may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

It will thus be seen that my improved warmair furnace provides a simpler construction and operation than the ordinary class of these furnaces and has few, if any, joints for the space or size of furnace and amount of radiating-surface. It will also be evident that the air for producing secondary combustion can be taken into the space around the fire-pot from any suitable place other than those shown and described, and a number of openings can be made to lead into said space for conducting said air therein.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A warm-air furnace comprising a firebox, a dome connected to said fire-box, said dome extending down around the fire-box, for the passage of the products of combustion from the fire-box and adapted to form a space between the fire-box and said dome, hot-air ports leading through said dome from said space, and a casing or shell within said fire box adapted to form a chamber between said shell and the outer wall of said fire-box, said chamber having air-supply ports connected thereto and being provided with an open upper end for producing secondary combustion within said dome.

2. A warm-air furnace comprising a firebox, a dome connected to said fire-box, said dome extending down around the fire-boxfor the passage of the products of combustion from the fire-box and adapted to form a space between the fire-box and said dome, hot-air ports leading through said dome from said space, a casing or shell within said fire-box adapted to form a chamber between said shell and the outer wall of said fire-box, said chamber having air-supply ports connected thereto and being provided with an open upper end for producing secondary combustion within said dome, and a diaphragm within said dome and above said open end for directing the products of combustion through and around said dome.

3. A warm-air furnace, comprising a firebox, a dome connected to said fire-box, said dome extending down around the fire-box for the passage of the products of combustion from the fire-box and adapted to form a space between the fire-box and said dome, hot-air ports leading through said dome from said space, a casing or shell within said fire-box adapted to form a chamber between said shell and the outer wall of said fire-box, said chamber having air-supply ports connected thereto and being provided with an open upper end for producing secondary combustion within said dome, and adiaphragm within said dome and above said open end, said diaphragm extending down Within said dome for forming two flues within said dome for the passage of the products of combustion through and around said dome.

4. A warm-air furnace, comprising a firebox, a dome connected to said fire-box, said dome extending down around the fire-box for the passage of the products of combustion from the fire-box and adapted to form aspace between the fire-box and said dome, hot-air ports leading through said dome from said and the outer wall of said fire-box,said chamher having air-supply ports connected thereto and being provided with an open upper end for producing secondary combustion within said dome, and a diaphragm above said open upper end and havinga curved portion there: in, said diaphragm extending down within said dome for forming two fines within said dome for the passage of the products of combustion through and around said dome.

5. A Warm-air furnace, comprising a firebox, a dome connected to said fire-box, said dome extending down around the fire-box for the passage of the products of combustion from the fire-box and adapted to form aspace between the fire-box and said dome, hot-air pipes leading through said dome from said space, a casing or shell within said fire-box adapted to form a chamber between said shell and the outer wallof said fire-box, said chamber having air-supply ports connected thereto and being provided with an open upper end for producing secondary combustion within said dome, a diaphragm above said open upper end and having a curved portion therein, said diaphragm extending down within said dome for forming two fines within said dome for the passage of the products of combustion through and around said dome, and adamper within said diaphragm and above said firebox.

In testimony whereof I, the said OLIVER L. BADGER, have hereunto set my hand.

OLIVER L. BADGER. Witnesses: v

J. N. CooKE, T. H. CLAYTON. 

